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| Nome: | isaycopys  | | E-mail: | isaycopys gmail.com | | Homepage: | http://www.ipadrun.com | | Quando: | 27/06/2012, alle 18:10 (UTC) | | Messaggio: | Good post, I want to get information. |
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Dr. Doug Stewart
Lithium was discovered by Johan Arfvedson in 1817, during an inquiry of petalite
(LiAlSi4O10).
He found the petalite contained ¡°silica, alumina and an alkali.¡± (1)
The unknown alkali metal in the petalite had lone properties.
It required more acid to even it than sodium and its carbonate was only sparingly soluble in o šC unalike sodium carbonate.
The changed alkali differed from potassium because it did not recite a provoke with tartaric acid.
Arfvedson tried to produce a untainted sampling of the unique metal past electrolysis, but he was ineffective; the battery he used was not stalwart enough. (2)
The utter metal was isolated the following year by both William Brande and Humphry Davy working independently.
Davy obtained a short quantity of lithium metal aside electrolysis of lithium carbonate. (3)
He noted the modish particular had a red heartthrob color a certain extent like strontium and produced an alkali explanation when dissolved in water.
In days less safety-conscious than the show, Brande said of lithium, ¡°its unravelling tastes acrid like the other fixed alkalies.¡± (4)
By 1855 Robert Bunsen and Augustus Matthiessen were independently producing the metal in substantial quantities by electrolysis of molten lithium chloride.
Lithium¡¯s label is derived from the Greek word ¡®lithos¡¯ meaning, ¡®stone.¡¯ |
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